Kogan Iwamoto (岩本 虎眼 Iwamoto Kogan)
The Grandmaster of the Kogan-Ryuu school. Mentally unbalanced most of the time, he regains his sanity most often in the period between fall and winter. Kogan cares nothing for his daughter, Mie, seeing her only as a tool to continue his bloodline. He has a small deformity, a sixth finger on one of his hands. His technique "Nagare Boshi" (Shooting Star) is known and feared by many Samurai. When he was younger, a Samurai named Yagyuu Munenori, who would later serve as instructor to the House of Shogun tricked Kogan into hiding his extra finger to the son of Tokugawa Ieyasu’s ally Honda Masanobu, knowing full well it would disturb him. This act shattered Kogan’s dreams of serving as instructor to the House of Shogun. Kogan is angered and curses the absence of a son. Kogan does share a tender moment of stating Mie had become beautiful upon being defeated at the hands of Iraku. However, given he envisioned Mie as a bride, it is questionable whether was happy at the sight of his daughter or pleased his daughter would continue his bloodline. Kogan also protects Fujiki from potential death at the hands of Sekiun; but again this could have been to protect his bloodline rather than fearing for Fujiki’s life. Kogan is staunchly constrained by social hierarchy and taught his disciples not to ignore social conventions.